.PHONY:all
all:test1 test2 test3

test1:test1.cc
	@g++ -o $@ $^ -std=c++11

test2:test2.cc
	@g++ -o $@ $^ -std=c++11

test3:test3.cc
	@g++ -o $@ $^ -std=c++11

.PHONY:clean
clean:
	@rm -rf test1 test2 test3